Re: Re: Re: [fluka-discuss]: MAT-PROP card

From: YANG Tao <yangt_at_ihep.ac.cn>
Date: Mon, 23 Nov 2015 22:39:26 +0800 (GMT+08:00)

Dear Francesco,
Thanks for your reply. But I don’t really understand what is meaning of "valid reasons" in your reply, could you give me an example?

Best Regards!
Tao Yang.


> -----原始邮件-----
> 发件人: "Francesco Cerutti" <Francesco.Cerutti_at_cern.ch>
> 发送时间: 2015年11月23日 星期一
> 收件人: "YANG Tao" <yangt_at_ihep.ac.cn>
> 抄送: "Mikhail Polkovnikov <Михаил Полковников>" <pmk_at_ihep.ru>, "fluka-discuss_at_fluka.org" <fluka-discuss_at_fluka.org>
> 主题: Re: Re: [fluka-discuss]: MAT-PROP card
>
>
> Hallo
>
> > Do you mean the potential value must be input by myself if the
> > material is not the pre-defined Fluka material?
>
> not at all. FLUKA is able to evaluate it as printed in the output file,
> e.g.:
>
> ***** dp/dx : material number 86 "CONCRETE" *****
> ***** Average excitation energy : 1.3068E+02 eV, weighted Z/A : 5.0095E-01 *****
>
> You can change it if you have valid reasons to do it.
>
> Best
>
> Francesco
>
> **************************************************
> Francesco Cerutti
> CERN-EN/STI
> CH-1211 Geneva 23
> Switzerland
> tel. ++41 22 7678962
> fax ++41 22 7668854
>
> On Mon, 23 Nov 2015, YANG Tao wrote:
>
> >
> > Dear Mikhail,
> >
> > Thanks for your kind help. Do you mean the potential value must be input by myself if the
> > material is not the pre-defined Fluka material?
> >
> > best regards!
> >
> > Tao Yang
> >
> > -----原始邮件-----
> > 发件人: "Mikhail Polkovnikov <Михаил Полковников>" <pmk_at_ihep.ru>
> > 发送时间: 2015年11月23日 星期一
> > 收件人: "YANG Tao" <yangt_at_ihep.ac.cn>, "fluka-discuss_at_fluka.org"
> > <fluka-discuss_at_fluka.org>
> > 抄送:
> > 主题: Re: [fluka-discuss]: MAT-PROP card
> >
> > On 23.11.2015 15:26, YANG Tao wrote:
> >
> > Dear Mikhail !
> >
> > Thanks for your reply. Then what is the mean excitation energy of the
> > mixture, is it the linear superposition of each value like Σi(w_i*I_i)?
> > Assume w_i is the volumetric weight. And does this value should be
> > provided by me in the input file or as default, that is to say, it is
> > left blank and calculated from systematic?
> >
> > Best Regards,
> >
> > Tao Yang.
> >
> >
> >
> > ----- 原始邮件-----
> > 发件人: "Mikhail Polkovnikov <Михаил Полковников>"
> > <pmk_at_ihep.ru>
> > 发送时间: 2015年11月23日 星期一
> > 收件人: "YANG Tao" <yangt_at_ihep.ac.cn>,
> > "fluka-discuss_at_fluka.org" <fluka-discuss_at_fluka.org>
> > 抄送:
> > 主题: Re: [fluka-discuss]: MAT-PROP card
> >
> > On 22.11.2015 04:55, YANG Tao wrote:
> >
> > Hi, everyone!
> >
> > I used FLUKA to simulate the ionization chamber response,
> > the work gas is a mixture of argon and nitrogen gas. I
> > creat a compound card in FLUKA to set the properties for
> > it. However, in the MAT-PROP card, I have no idea of
> > WHAT(3)-the average ionization potential, is this value
> > input by me or as default (calculated from systematics)? If
> > it is the previous case, how should I obtain the value?
> >
> > Many thanks in advance.
> >
> >
> > --
> > Tao Yang, CAS.
> >
> > Dear Tao Yang,
> >
> > Please look the mean excitation energy for natural materials at the PDG
> > official site.
> > For argon gas the value is 188.0 eV, and for nitrogen it's 82 eV.
> >
> >
> > Best regards,
> > Mikhail
> >
> >
> > --
> >
> > 杨涛
> > 中科院高能所东莞分部(东莞中子科学中心)加速器技术部      
> > 地址:东莞市大朗镇中子源路1号中国散裂中子源A2栋606室
> > E-mail:yangt_at_ihep.ac.cn
> > 电话:0769-38944239
> > 邮编:523803
> >
> > Dear Tao Yang,
> >
> > If you use FLUKA gas materials: ARGON, NITROGEN - they already had these values, so
> > FLUKA could calculate mean excitation energy for the mixture from systematics, and
> > you don't need to use MAT-PROP card.
> >
> >
> > Best regards,
> > Mikhail
> >
> >
> > --
> >
> > 杨涛
> > 中科院高能所东莞分部(东莞中子科学中心)加速器技术部      
> > 地址:东莞市大朗镇中子源路1号中国散裂中子源A2栋606室
> > E-mail:yangt_at_ihep.ac.cn
> > 电话:0769-38944239
> > 邮编:523803
> >
> >
> >


--
杨涛
中科院高能所东莞分部(东莞中子科学中心)加速器技术部      
地址:东莞市大朗镇中子源路1号中国散裂中子源A2栋606室
E-mail:yangt_at_ihep.ac.cn
电话:0769-38944239
邮编:523803
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Received on Mon Nov 23 2015 - 16:56:18 CET

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